Cisco Systems v1.0 Voice CME Router Configuration, Preparing the Routers to handle the VLANs

Step 3 Voice CME Router Configuration

3.1 Preparing the Routers to handle the VLANs

Create and configure two sub-interfaces on the fastEthernet 0/0 of R1 and two sub-interfaces on the fastEthernet 0/0 of R2. They will be used by the VLANs configured on the switch.

On R1:

R1(config)# int fa0/0

R1(config-if)# no ip address

R1(config-if)# no shutdown

R1(config)# int fa0/0.10

R1(config)# encapsulation dot1q 10

R1(config)# ip address 10.10.0.1 255.255.255.0

R1(config)# no shut

R1(config)# int fa0/0.15

R1(config)# encapsulation dot1q 15

R1(config)# ip address 10.15.0.1 255.255.255.0

R1(config)# no shut

On R2:

R2(config)# int fa0/0

R2(config-if)# no ip address

R2(config-if)# no shutdown

R2(config)# int fa0/0.20

R2(config-subif)#encapsulation dot1q 20

R2(config-subif)#ip address 10.20.0.1 255.255.255.0

R2(config-subif)# no shut

R2(config-subif)# int fa0/0.25

R2(config-subif)#encapsulation dot1q 25

R2(config-subif)#ip address 10.25.0.1 255.255.255.0

R2(config-subif)# no shut

3.2 Configuring the DHCP Server on the Routers

The PCs and IP Phones will need IP Addresses. Configure the DHCP Pools on both R1 and R2 routers so the routers will be able to teach IP Addresses to PCs and IP Phones.

On R1:

R1(config)# ip dhcp pool DATA

R1(dhcp-config)#network 10.10.0.0 255.255.255.0

R1(dhcp-config)#default-router 10.10.0.1

R1(config)# ip dhcp pool VOICE

R1(dhcp-config)#network 10.15.0.0 255.255.255.0

R1(dhcp-config)#default-router 10.15.0.1

R1(dhcp-config)#option 150 ip 10.15.0.1

Note: The option ip 150 command is used to provide the ip address of the TFTP server.

126 - 165 IP Telephony v1.0 Case Study 1: Copyright ♥ 2005, Cisco Systems, Inc.